Pump grip



Nov. 15, 1927.

N. l. CLARK PUMP GRIP Filed Junevz. 192e Patented Nov. l5, i927.

unirsi) STATES NOLON I. CLARK, F BEGGS, OKLAHOMA.

PUMP

GRIP. f

Application filed June 25, 1926. Slerialwlo. 118,609.V

My invention relates to adjustable pump grips and has for its principal object to provide au adjustable hollow screw for spacing the sucker rods in oil or water wells.

Another object is to provide an apparatus of this character which maybe manipulated by one man,` thus reducing the labor expenses to a minimum.

A Jfurther object is to provide a device which can be operated on any standard pump rig, which is simple and vstrong in construction, efficient in performance and inexpensive to manufacture.

Other objects and advantages will become apparent from the following detailed description when viewed together with the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout, and in which Figure 1 is an elevational `view with parts in section.

Figure 2 is a side elevational view.

Figure 3 is a transverse sectional view taken on a line of Figure 1,

Figure 1 is a similar view taken on a line 4 4 of' Figure 1, and y Figure 5 is a perspective view of one of the rod attaching hooks.

Referring now to the drawings wherein tor the purpose of illustration I have shown a preferred form of my invention, I provide a stirrup composed of a pair of vertically disposed hangers 5 converging toward their upper ends to form a head 6 above which is provided a lifting ring 7. 'I he head is provided with a bore within which 1s fitted a trunnion S by means of which the device may be suspended from the walking beam of the well rig. The hangers 5 are preferably constructed ot strap iron and curved to conform to the are of a circle as shown in the Figures 3 and 1, and at the lower ends thereof the hangers are provided with enlarged butts 9 having threaded segments alohg their inner faces t0 engage the external threads of a hollow screw 10, the butts in effect constituting a pair of jaws for gripping the screw and vertically adjustable by means of the threaded engagement.

An annular ring 11 isfitted around the butt ends 9 of the hangers and of a slightly larger circumference and having a tighten ing screw 12 carried therein wlth its inner end adapted to be forced against one of the butt ends whereby to increase the gripping tendency thereof.

' The upper end ol' the hollow screw 1() is provided with a guide 14 in the form ot a substantially square y shaped plate, `having projections 15 at each corner between which the hangers are slidably fitted. A nut 1G is threaded over the end of the hollow screw above the guide to secure the same in position.

At the lower end of the hollow screw I provide a polishing'rod coupler comprising a hollow socket member 17 with an enlarged bore at its upper end, the walls of which are internally threaded. The end of the hollow screw terminates in an annular flange 18 fitted within the base of the bore of the socket and an externally threaded hollow plug 19 is carried on the hollow screw for threaded engagement with the socket thereby swivelly connecting the socket member to the hollow screw. Ball bearings 20 are placed between the flange 18 and the plug 19 to facilitate rotary movement therebetween, the bearings being so placed as to carry the pulling force of the rod 10 inserted in the coupling.

The lower end of the coupling is reduced in diameter and is provided with a pair of rod clamp members 21 extending laterally at opposite sides therefrom with hooks at their inner ends for embracing the rod and threaded studs at their outer ends upon which are arranged nuts 22 for tightening the clamp members about the rod.

Handles 23 are arranged upon the lower portion of the hollow screw immediately above the rod coupling and are pivotally connected for swinging upwardly to lugs 24 integrally formed on the screw.

While I have shown the preferred embodiment of my invention. it is to be understood that various changes in the size, shape, and arrangement of parts may be resorted to without departing from the spirit of the invention and the scope of the appended claims.

I claim:

1. In combination with a temper screw or the like having a flange formed at the lower end thereof of a rod coupler comprising an externally threaded plug swivelly carried on the temper screw and retained by said flange, an internally threaded socket member adapted to receive the flanged end of the temper screw and attachable to the plug, a bore in said socket member for receiving a well tool, a pair of clamping members arranged in said bore and extending laterally from the socket member and tight? `receive the fianged end of the temper screw andftln'eadedly scoured to the plug, ant- :friction means between the lange'and the plug and ar anged to Carr)T the weight of the socket member, a bore in said eocket member for receiving a Well tool, a pair of opposed rod clamping members operatively positioned in said bore and having Shanks `entending laterally from the socket member and means on the Shanks for tightening the clamping members to the rod.

In testimony whereof I aflix my signa ture.

NOLON I. CLARK. 

